/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		IntList[][] lists = new IntList[5][5];
		IntSet[][] sets = new IntSet[5][5];
		IntIntMap[][] maps = new IntIntMap[5][5];
		IntDeque[][] deques = new IntDeque[5][5];
		IntHeap[][] heaps = new IntHeap[5][5];
 
		(new IntList()).add(100);
		(new IntSet()).add(100);
		(new IntIntMap()).put(100, 99);
		(new IntDeque()).addLast(100);
		(new IntHeap()).add(100);
 
	}
}
 
class IntList extends ArrayList<Integer> {}
class IntSet extends HashSet<Integer> {}
class IntIntMap extends HashMap<Integer, Integer> {}
class IntDeque extends ArrayDeque<Integer> {}
class IntHeap extends PriorityQueue<Integer> {}

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